var checkobj

function agreesubmit(el){
checkobj=el
if (document.all||document.getElementById){
for (i=0;i<checkobj.form.length;i++){  
var tempobj=checkobj.form.elements[i]
if(tempobj.type.toLowerCase()=="submit")
tempobj.disabled=!checkobj.checked
}
}
}
function defaultagree(el){
if (!document.all&&!document.getElementById){
if (window.checkobj&&checkobj.checked)
return true
else{
alert("Lees eerst de voorwaarden en ga ermee akkoord!")
return false
}
}
}


//keuze mogelijkheid
function enableField1()
{
document.form1.iptv_newstyle.disabled=false;
document.form1.Internettoegangbandwidths_fk.disabled=false;
document.form1.VoIP__via__Teliophonenumber2.disabled=false;
document.form1.free_call.disabled=false;
document.form1.product_code.disabled=false;
}
function enableField2()
{
document.form1.iptv_newstyle.disabled=false;
document.form1.Internettoegangbandwidths_fk.disabled=true;
document.form1.VoIP__via__Teliophonenumber2.disabled=true;
document.form1.free_call.disabled=true;
document.form1.product_code.disabled=true;
}
function enableField3()
{
document.form1.iptv_newstyle.disabled=false;
document.form1.Internettoegangbandwidths_fk.disabled=false;
document.form1.VoIP__via__Teliophonenumber2.disabled=true;
document.form1.free_call.disabled=true;
document.form1.product_code.disabled=false;
}
function enableField4()
{
document.form1.iptv_newstyle.disabled=true;
document.form1.Internettoegangbandwidths_fk.disabled=false;
document.form1.VoIP__via__Teliophonenumber2.disabled=false;
document.form1.free_call.disabled=false;
document.form1.product_code.disabled=false;
}
function enableField5()
{
document.form1.iptv_newstyle.disabled=true;
document.form1.Internettoegangbandwidths_fk.disabled=false;
document.form1.VoIP__via__Teliophonenumber2.disabled=true;
document.form1.free_call.disabled=true;
document.form1.product_code.disabled=false;
}
function enableField6()
{
document.form1.iptv_newstyle.disabled=false;
document.form1.Internettoegangbandwidths_fk.disabled=true;
document.form1.VoIP__via__Teliophonenumber2.disabled=true;
document.form1.free_call.disabled=true;
document.form1.product_code.disabled=true;
}

//dtv
function toggle(chkbox, group) { 
    var visSetting = (chkbox.checked) ? "visible" : "hidden"; 
    document.getElementById(group).style.visibility = visSetting; 
} 
function swap(radBtn, group) { 
    var modemsVisSetting = (group == "modems") ? ((radBtn.checked) ? "" : "none") : "none"; 
    document.getElementById("modems").style.display = modemsVisSetting; 
}